Recent advances and perspective of photonic bound states in the continuum

G Xu, H Xing, Z Xue, D Lu, J Fan, J Fan, PP Shum… - Ultrafast …, 2023 - spj.science.org
Recent advancements in photonic bound states in the continuum (BICs) have opened up
exciting new possibilities for the design of optoelectronic devices with improved …

Ultrasensitive Terahertz Biodetection Enabled by Quasi‐BIC‐Based Metasensors

R Wang, L Xu, L Huang, X Zhang, H Ruan, X Yang… - Small, 2023 - Wiley Online Library
Advanced sensing devices, highly sensitive, and reliable in detecting ultralow
concentrations of circulating biomarkers, are extremely desirable and hold great promise for …

Advances in nonlinear metasurfaces for imaging, quantum, and sensing applications

Z Zheng, D Rocco, H Ren, O Sergaeva, Y Zhang… - …, 2023 - degruyter.com
Metasurfaces, composed of artificial meta-atoms of subwavelength size, can support strong
light–matter interaction based on multipolar resonances and plasmonics, hence offering the …

High-efficiency optical frequency mixing in an all-dielectric metasurface enabled by multiple bound states in the continuum

T Liu, M Qin, F Wu, S Xiao - Physical Review B, 2023 - APS
We present nonlinear optical four-wave mixing in a silicon nanodisk dimer metasurface.
Under the oblique incident plane waves, the designed metasurface exhibits a multiresonant …

Efficiently spatial field localization enabled second-harmonic and sum-frequency generation in an etchless LiNbO3 layer by guided resonant quasi-bound states in the …

S Cai, S Zong, X Liu, G Liu, J Chen, Z Liu - Applied Physics Letters, 2023 - pubs.aip.org
High-Q resonances on metasurfaces have yielded a feasible approach for nonlinear
frequency conversion in recent years. In this work, we propose a highly efficient nonlinear …

Enhanced sum-frequency generation from etchless lithium niobate empowered by dual quasi-bound states in the continuum

S Feng, T Liu, W Chen, F Wu, S Xiao - Science China Physics, Mechanics …, 2023 - Springer
The miniaturization of nonlinear light sources is central to the integrated photonic platform,
driving a quest for high-efficiency frequency generation and mixing at the nanoscale. In this …

Q-factor mediated quasi-BIC resonances coupling in asymmetric dimer lattices

Y Gao, L Xu, X Shen - Optics Express, 2022 - opg.optica.org
Resonance coupling in the regime of bound states in the continuum (BICs) provides an
efficient method for engineering nanostructure's optical response with various lineshape …

Quasi-symmetry-protected BICs in a double-notched silicon nanodisk metasurface

W Ma, C Zhou - Optics Letters, 2023 - opg.optica.org
Bound states in the continuum (BICs) hold great promise in enhancing light–matter
interaction as they have an infinite Q-factor. To date, the symmetry-protected BIC (SP-BIC) is …

Tunable Second Harmonic Generation with Large Enhancement in A Nonlocal All‐Dielectric Metasurface Over A Broad Spectral Range

H Jiang, K Sun, Y Jia, Y Cai, U Levy… - Advanced Optical …, 2024 - Wiley Online Library
Recently, all‐dielectric metasurfaces are profoundly exploited to enhance light‐matter
interactions, resulting from the high quality‐factor (Q‐factor) optical resonances that based …

Boosting second harmonic generation by merging bound states in the continuum

Q Liu, L Qu, Z Gu, D Zhang, W Wu, W Cai, M Ren, J Xu - Physical Review B, 2023 - APS
Ultracompact devices for second harmonic generation (SHG) have broad applications in
various fields. In this study, we numerically demonstrate efficient SHG from a merged bound …